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Yogita Ingle 6 years ago
Let radius of sphere is 100 unit
now volume of sphere {tex}=4/3pi.(r)^3{/tex}
volume of sphere={tex}4/3pi.(100)^3{/tex}
=4/3pi.1000000 cubic unit
a/c radius increased by 10%
so , new radius =100+100x10/100=110unit
hence volume of new sphere=4/3pi(110)^3=4/3pi.1331000cubic unit
difference their volume=4/3pi.331000cubic unit
percentage increase=volume difference/volume of sphere
=(4/3pi.331000/4/3pi.1000000)x100
=33.1%
Posted by Vinod Kumar 6 years ago
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Yogita Ingle 6 years ago
Let the side of a cube = a cm
It is given that ,
Surface area of the cube = 1176 cm²
6a² = 1176
a² = 1176/6
a² = 196
a = √ 196
a = 14 cm
Therefore ,
Volume of the cube = a³
V = ( 14 cm )³
V = 2744 cm³
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Hariom Dalal 6 years ago
2Thank You